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Date: Thu, 25 Jan 2024 06:57:46 +0100
From: Matthias Apitz <>
Subject: Re: DES passwords not cracked within hours

El día miércoles, enero 24, 2024 a las 04:55:16 +0100, Solar Designer escribió:

> On Wed, Jan 24, 2024 at 02:14:16PM +0100, Matthias Apitz wrote:
> > Now I have another use case and using the same installation 'john' is
> > unwilling to crack a single line password file in hours:
> This happens.  Not every password is easily crackable.
> > What I do wrong?
> Not exactly wrong, but there are a few things you can do to improve your
> chances and speed this up:

Thanks for your comments and hints.

As I said, I used the same installation tree as in October 2022. At this
time I could crack a password in ~20 minutes as the files proof:

~/guru/john-1.9.0-jumbo-1/run> ls -ltr --full-time john.pot /tmp/pins.des
-rw-r--r-- 1 sisis sisis 104 2022-10-13 13:25:49.403363915 +0200 /tmp/pins.des
-rw------- 1 sisis sisis  21 2022-10-13 13:44:58.261868507 +0200 john.pot
~/guru/john-1.9.0-jumbo-1/run> cat john.pot

The actual DES hash has the same length and the clear PIN only consists
of 6 chars: one small letter, 4 digits and the #-symbol. And it's still
running and after ~17 hours w/o any result.

Matthias Apitz, ✉, +49-176-38902045
Public GnuPG key:

I am not at war with Russia.  Я не воюю с Россией.
Ich bin nicht im Krieg mit Russland.

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